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4 years ago

What is the volume of a cylinder with base radius 2 and height 5

Mathematics

1 answer:

Bogdan [553]4 years ago

7 0

Answer:

62.8

Step-by-step explanation:

V = πr²h

V = 3.14 × 2² × 5

V = 3.14 × 4 × 5

V = 3.14 × 20

V = 62.8

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(2x-y)2-(y+2)2:::::::::::::::

Reil [10]

Answer:

(2x - y )2 - (y + 2)2 = 4 (x - y - 1)

Step-by-step explanation:

$(2x -y) 2 - ( y + 2 ) 2 = (4x -2y) -(2y + 4) \\\\$

$= 4x - 2y -2y - 4\\\\=4x - 4y - 4\\\\=4(x-y-1)$

6 0

3 years ago

What value of n makes the<br> statement true?<br> nx(7 + 8) = (5 x 7) + (5 x 8)

Sindrei [870]

Answer:

n=5

Step-by-step explanation:

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3 years ago

The spokes of a bicycle wheel form 10 congruent central angles. The diameter of the circle formed by the outer edge of the wheel

Yuki888 [10]

Answer:

$5.6$ inches.

Step-by-step explanation:

The length of the outer edge of the wheel between two consecutive spokes is given by;

$l=d\sin(\frac{\theta}{2} )$

where d=18 inches.

and

$\theta=\frac{360\degree}{10}=36\degree$ is the central angle.

We substitute the values to obtain;

$l=18\sin(\frac{36\degree}{2})$

$l=18\sin(18\degree)$

$l=5.562305899$

$l=5.6$ inches to the nearest tenth.

8 0

4 years ago

The perimeter of a rectangle playground is 40 yards it is 1 1/2 yards longer than it’s Wide what is the area of the playground

raketka [301]

The solution to the problem is shown below:
Perimeter = 40 yardsWide = W =?Length = W + 1.5 yards
The formula for the perimeter of a rectangular playground:P=2(L+W) where "L" is for the length and "W" is for the Width40 = 2( (W+1.5) + W )40 = 2(2W+1.5)40/2=2W + 1.520 - 1.5 =2WW=9.25L=9.25 + 1.5 =10.75
Area is L x WArea = 9.25 x 10.75Area = 102.125 squard unit

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3 years ago

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alukav5142 [94]

Answer:

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Step-by-step explanation:

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3 years ago